Add test for WSGIRequest.context. Closes #78

The test can't reproduce the original problem reported in the issue
so consider it resolved.

Author: atodorov

pylint_django/tests/input/func_noerror_test_wsgi_request.py

@@ -0,0 +1,22 @@
+"""
+Checks that Pylint does not complain about a standard test. See:
+https://github.com/PyCQA/pylint-django/issues/78
+"""
+
+from django.test import TestCase
+from django.db import models
+
+
+class SomeModel(models.Model):
+    """Just a model."""
+    pass
+
+
+class SomeTestCase(TestCase):
+    """A test cast."""
+    def test_thing(self):
+        """Test a thing."""
+        expected_object = SomeModel()
+        response = self.client.get('/get/some/thing/')
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(response.context['object'], expected_object)